<div v-if="isShow" class="rong-dialog rong-qrcode-dialog">
  <div class="rong-qrcode" id="qrcode"></div>
  <p class="rong-qrcode-propt">扫一扫加入会议</p>
  <span class="rong-qrcode-copy">(右键可复制图片)</span>
  <a class="rong-dialog-close" @click="cancel">✕</a>
</div>